| ( | 58 | − | 36 | ) | ÷ | ( | 36 | − | 26 | ) | = | ( | 80 | − | t | ) | ÷ | ( | t | − | 56 | ) |
| 方程两边同时乘以: | ( | 36 | − | 26 | ) | , | ( | t | − | 56 | ) |
| ( | 58 | − | 36 | ) | ( | t | − | 56 | ) | = | ( | 80 | − | t | ) | ( | 36 | − | 26 | ) |
| 58 | ( | t | − | 56 | ) | − | 36 | ( | t | − | 56 | ) | = | ( | 80 | − | t | ) | ( | 36 | − | 26 | ) |
| 58 | ( | t | − | 56 | ) | − | 36 | ( | t | − | 56 | ) | = | 80 | ( | 36 | − | 26 | ) | − | t | ( | 36 | − | 26 | ) |
| 58 | t | − | 58 | × | 56 | − | 36 | ( | t | − | 56 | ) | = | 80 | ( | 36 | − | 26 | ) | − | t | ( | 36 | − | 26 | ) |
| 58 | t | − | 58 | × | 56 | − | 36 | ( | t | − | 56 | ) | = | 80 | × | 36 | − | 80 | × | 26 | − | t | ( | 36 | − | 26 | ) |
| 58 | t | − | 3248 | − | 36 | ( | t | − | 56 | ) | = | 2880 | − | 2080 | − | t | ( | 36 | − | 26 | ) |
| 58 | t | − | 3248 | − | 36 | ( | t | − | 56 | ) | = | 800 | − | t | ( | 36 | − | 26 | ) |
| 58 | t | − | 3248 | − | 36 | t | + | 36 | × | 56 | = | 800 | − | t | ( | 36 | − | 26 | ) |
| 58 | t | − | 3248 | − | 36 | t | + | 36 | × | 56 | = | 800 | − | t | × | 36 | + | t | × | 26 |
| 58 | t | − | 3248 | − | 36 | t | + | 2016 | = | 800 | − | t | × | 36 | + | t | × | 26 |
| 22 | t | − | 1232 | = | 800 | − | 10 | t |
| 22 | t | + | 10 | t | = | 800 | + | 1232 |
| 32 | t | = | 800 | + | 1232 |
| 32 | t | = | 2032 |
| t | = | 2032 | ÷ | 32 |
| = | 2032 | × | 1 32 |
| = | 127 | × | 1 2 |
| t | = | 127 2 |
| t | = | 63.5 |